Mercurial > hg > truffle
annotate src/share/vm/code/scopeDesc.cpp @ 3018:5857923e563c
Fixed an issue with frame states in exception dispatch chains (now we are correctly rethrowing the exception immediately at entering the interpreter).
| author | Thomas Wuerthinger <thomas@wuerthinger.net> |
|---|---|
| date | Sat, 18 Jun 2011 19:13:55 +0200 |
| parents | f95d63e2154a |
| children | e522a00b91aa |
| rev | line source |
|---|---|
| 0 | 1 /* |
| 1748 | 2 * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved. |
| 0 | 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. |
| 4 * | |
| 5 * This code is free software; you can redistribute it and/or modify it | |
| 6 * under the terms of the GNU General Public License version 2 only, as | |
| 7 * published by the Free Software Foundation. | |
| 8 * | |
| 9 * This code is distributed in the hope that it will be useful, but WITHOUT | |
| 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or | |
| 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License | |
| 12 * version 2 for more details (a copy is included in the LICENSE file that | |
| 13 * accompanied this code). | |
| 14 * | |
| 15 * You should have received a copy of the GNU General Public License version | |
| 16 * 2 along with this work; if not, write to the Free Software Foundation, | |
| 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. | |
| 18 * | |
|
1552
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1253
diff
changeset
|
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA |
|
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1253
diff
changeset
|
20 * or visit www.oracle.com if you need additional information or have any |
|
c18cbe5936b8
6941466: Oracle rebranding changes for Hotspot repositories
trims
parents:
1253
diff
changeset
|
21 * questions. |
| 0 | 22 * |
| 23 */ | |
| 24 | |
| 1972 | 25 #include "precompiled.hpp" |
| 26 #include "code/debugInfoRec.hpp" | |
| 27 #include "code/pcDesc.hpp" | |
| 28 #include "code/scopeDesc.hpp" | |
| 29 #include "memory/resourceArea.hpp" | |
| 30 #include "oops/oop.inline.hpp" | |
| 31 #include "runtime/handles.inline.hpp" | |
| 0 | 32 |
| 33 | |
|
3018
5857923e563c
Fixed an issue with frame states in exception dispatch chains (now we are correctly rethrowing the exception immediately at entering the interpreter).
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
1972
diff
changeset
|
34 ScopeDesc::ScopeDesc(const nmethod* code, int decode_offset, int obj_decode_offset, bool reexecute, bool rethrow_exception, bool return_oop) { |
| 0 | 35 _code = code; |
| 36 _decode_offset = decode_offset; | |
| 37 _objects = decode_object_values(obj_decode_offset); | |
|
931
72088be4b386
6873116: Modify reexecute implementation to use pcDesc to record the reexecute bit
cfang
parents:
900
diff
changeset
|
38 _reexecute = reexecute; |
|
1253
f70b0d9ab095
6910618: C2: Error: assert(d->is_oop(),"JVM_ArrayCopy: dst not an oop")
kvn
parents:
931
diff
changeset
|
39 _return_oop = return_oop; |
|
3018
5857923e563c
Fixed an issue with frame states in exception dispatch chains (now we are correctly rethrowing the exception immediately at entering the interpreter).
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
1972
diff
changeset
|
40 _rethrow_exception = rethrow_exception; |
| 0 | 41 decode_body(); |
| 42 } | |
| 43 | |
|
3018
5857923e563c
Fixed an issue with frame states in exception dispatch chains (now we are correctly rethrowing the exception immediately at entering the interpreter).
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
1972
diff
changeset
|
44 ScopeDesc::ScopeDesc(const nmethod* code, int decode_offset, bool reexecute, bool rethrow_exception, bool return_oop) { |
| 0 | 45 _code = code; |
| 46 _decode_offset = decode_offset; | |
| 47 _objects = decode_object_values(DebugInformationRecorder::serialized_null); | |
|
931
72088be4b386
6873116: Modify reexecute implementation to use pcDesc to record the reexecute bit
cfang
parents:
900
diff
changeset
|
48 _reexecute = reexecute; |
|
1253
f70b0d9ab095
6910618: C2: Error: assert(d->is_oop(),"JVM_ArrayCopy: dst not an oop")
kvn
parents:
931
diff
changeset
|
49 _return_oop = return_oop; |
|
3018
5857923e563c
Fixed an issue with frame states in exception dispatch chains (now we are correctly rethrowing the exception immediately at entering the interpreter).
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
1972
diff
changeset
|
50 _rethrow_exception = rethrow_exception; |
| 0 | 51 decode_body(); |
| 52 } | |
| 53 | |
| 54 | |
| 55 ScopeDesc::ScopeDesc(const ScopeDesc* parent) { | |
| 56 _code = parent->_code; | |
| 57 _decode_offset = parent->_sender_decode_offset; | |
| 58 _objects = parent->_objects; | |
|
931
72088be4b386
6873116: Modify reexecute implementation to use pcDesc to record the reexecute bit
cfang
parents:
900
diff
changeset
|
59 _reexecute = false; //reexecute only applies to the first scope |
|
3018
5857923e563c
Fixed an issue with frame states in exception dispatch chains (now we are correctly rethrowing the exception immediately at entering the interpreter).
Thomas Wuerthinger <thomas@wuerthinger.net>
parents:
1972
diff
changeset
|
60 _rethrow_exception = false; |
|
1253
f70b0d9ab095
6910618: C2: Error: assert(d->is_oop(),"JVM_ArrayCopy: dst not an oop")
kvn
parents:
931
diff
changeset
|
61 _return_oop = false; |
| 0 | 62 decode_body(); |
| 63 } | |
| 64 | |
| 65 | |
| 66 void ScopeDesc::decode_body() { | |
| 67 if (decode_offset() == DebugInformationRecorder::serialized_null) { | |
| 68 // This is a sentinel record, which is only relevant to | |
| 69 // approximate queries. Decode a reasonable frame. | |
| 70 _sender_decode_offset = DebugInformationRecorder::serialized_null; | |
| 71 _method = methodHandle(_code->method()); | |
| 72 _bci = InvocationEntryBci; | |
| 73 _locals_decode_offset = DebugInformationRecorder::serialized_null; | |
| 74 _expressions_decode_offset = DebugInformationRecorder::serialized_null; | |
| 75 _monitors_decode_offset = DebugInformationRecorder::serialized_null; | |
| 76 } else { | |
| 77 // decode header | |
| 78 DebugInfoReadStream* stream = stream_at(decode_offset()); | |
| 79 | |
| 80 _sender_decode_offset = stream->read_int(); | |
| 81 _method = methodHandle((methodOop) stream->read_oop()); | |
|
931
72088be4b386
6873116: Modify reexecute implementation to use pcDesc to record the reexecute bit
cfang
parents:
900
diff
changeset
|
82 _bci = stream->read_bci(); |
|
900
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
196
diff
changeset
|
83 |
| 0 | 84 // decode offsets for body and sender |
| 85 _locals_decode_offset = stream->read_int(); | |
| 86 _expressions_decode_offset = stream->read_int(); | |
| 87 _monitors_decode_offset = stream->read_int(); | |
| 88 } | |
| 89 } | |
| 90 | |
| 91 | |
| 92 GrowableArray<ScopeValue*>* ScopeDesc::decode_scope_values(int decode_offset) { | |
| 93 if (decode_offset == DebugInformationRecorder::serialized_null) return NULL; | |
| 94 DebugInfoReadStream* stream = stream_at(decode_offset); | |
| 95 int length = stream->read_int(); | |
| 96 GrowableArray<ScopeValue*>* result = new GrowableArray<ScopeValue*> (length); | |
| 97 for (int index = 0; index < length; index++) { | |
| 98 result->push(ScopeValue::read_from(stream)); | |
| 99 } | |
| 100 return result; | |
| 101 } | |
| 102 | |
| 103 GrowableArray<ScopeValue*>* ScopeDesc::decode_object_values(int decode_offset) { | |
| 104 if (decode_offset == DebugInformationRecorder::serialized_null) return NULL; | |
| 105 GrowableArray<ScopeValue*>* result = new GrowableArray<ScopeValue*>(); | |
| 106 DebugInfoReadStream* stream = new DebugInfoReadStream(_code, decode_offset, result); | |
| 107 int length = stream->read_int(); | |
| 108 for (int index = 0; index < length; index++) { | |
|
44
52fed2ec0afb
6667620: (Escape Analysis) fix deoptimization for scalar replaced objects
kvn
parents:
0
diff
changeset
|
109 // Objects values are pushed to 'result' array during read so that |
|
52fed2ec0afb
6667620: (Escape Analysis) fix deoptimization for scalar replaced objects
kvn
parents:
0
diff
changeset
|
110 // object's fields could reference it (OBJECT_ID_CODE). |
|
52fed2ec0afb
6667620: (Escape Analysis) fix deoptimization for scalar replaced objects
kvn
parents:
0
diff
changeset
|
111 (void)ScopeValue::read_from(stream); |
| 0 | 112 } |
| 113 assert(result->length() == length, "inconsistent debug information"); | |
| 114 return result; | |
| 115 } | |
| 116 | |
| 117 | |
| 118 GrowableArray<MonitorValue*>* ScopeDesc::decode_monitor_values(int decode_offset) { | |
| 119 if (decode_offset == DebugInformationRecorder::serialized_null) return NULL; | |
| 120 DebugInfoReadStream* stream = stream_at(decode_offset); | |
| 121 int length = stream->read_int(); | |
| 122 GrowableArray<MonitorValue*>* result = new GrowableArray<MonitorValue*> (length); | |
| 123 for (int index = 0; index < length; index++) { | |
| 124 result->push(new MonitorValue(stream)); | |
| 125 } | |
| 126 return result; | |
| 127 } | |
| 128 | |
| 129 DebugInfoReadStream* ScopeDesc::stream_at(int decode_offset) const { | |
| 130 return new DebugInfoReadStream(_code, decode_offset, _objects); | |
| 131 } | |
| 132 | |
| 133 GrowableArray<ScopeValue*>* ScopeDesc::locals() { | |
| 134 return decode_scope_values(_locals_decode_offset); | |
| 135 } | |
| 136 | |
| 137 GrowableArray<ScopeValue*>* ScopeDesc::expressions() { | |
| 138 return decode_scope_values(_expressions_decode_offset); | |
| 139 } | |
| 140 | |
| 141 GrowableArray<MonitorValue*>* ScopeDesc::monitors() { | |
| 142 return decode_monitor_values(_monitors_decode_offset); | |
| 143 } | |
| 144 | |
| 145 GrowableArray<ScopeValue*>* ScopeDesc::objects() { | |
| 146 return _objects; | |
| 147 } | |
| 148 | |
| 149 bool ScopeDesc::is_top() const { | |
| 150 return _sender_decode_offset == DebugInformationRecorder::serialized_null; | |
| 151 } | |
| 152 | |
| 153 ScopeDesc* ScopeDesc::sender() const { | |
| 154 if (is_top()) return NULL; | |
| 155 return new ScopeDesc(this); | |
| 156 } | |
| 157 | |
| 158 | |
| 159 #ifndef PRODUCT | |
| 160 | |
| 161 void ScopeDesc::print_value_on(outputStream* st) const { | |
| 162 tty->print(" "); | |
| 163 method()()->print_short_name(st); | |
| 164 int lineno = method()->line_number_from_bci(bci()); | |
| 165 if (lineno != -1) { | |
| 166 st->print_cr("@%d (line %d)", bci(), lineno); | |
| 167 } else { | |
| 168 st->print_cr("@%d", bci()); | |
| 169 } | |
| 170 } | |
| 171 | |
| 172 void ScopeDesc::print_on(outputStream* st) const { | |
| 173 print_on(st, NULL); | |
| 174 } | |
| 175 | |
| 176 void ScopeDesc::print_on(outputStream* st, PcDesc* pd) const { | |
| 177 // header | |
| 178 if (pd != NULL) { | |
| 179 tty->print_cr("ScopeDesc(pc=" PTR_FORMAT " offset=%x):", pd->real_pc(_code), pd->pc_offset()); | |
| 180 } | |
| 181 | |
| 182 print_value_on(st); | |
| 183 // decode offsets | |
| 184 if (WizardMode) { | |
| 1748 | 185 st->print("ScopeDesc[%d]@" PTR_FORMAT " ", _decode_offset, _code->content_begin()); |
| 0 | 186 st->print_cr(" offset: %d", _decode_offset); |
| 187 st->print_cr(" bci: %d", bci()); | |
|
900
9987d9d5eb0e
6833129: specjvm98 fails with NullPointerException in the compiler with -XX:DeoptimizeALot
cfang
parents:
196
diff
changeset
|
188 st->print_cr(" reexecute: %s", should_reexecute() ? "true" : "false"); |
| 0 | 189 st->print_cr(" locals: %d", _locals_decode_offset); |
| 190 st->print_cr(" stack: %d", _expressions_decode_offset); | |
| 191 st->print_cr(" monitor: %d", _monitors_decode_offset); | |
| 192 st->print_cr(" sender: %d", _sender_decode_offset); | |
| 193 } | |
| 194 // locals | |
| 195 { GrowableArray<ScopeValue*>* l = ((ScopeDesc*) this)->locals(); | |
| 196 if (l != NULL) { | |
| 197 tty->print_cr(" Locals"); | |
| 198 for (int index = 0; index < l->length(); index++) { | |
| 199 st->print(" - l%d: ", index); | |
| 200 l->at(index)->print_on(st); | |
| 201 st->cr(); | |
| 202 } | |
| 203 } | |
| 204 } | |
| 205 // expressions | |
| 206 { GrowableArray<ScopeValue*>* l = ((ScopeDesc*) this)->expressions(); | |
| 207 if (l != NULL) { | |
| 208 st->print_cr(" Expression stack"); | |
| 209 for (int index = 0; index < l->length(); index++) { | |
| 210 st->print(" - @%d: ", index); | |
| 211 l->at(index)->print_on(st); | |
| 212 st->cr(); | |
| 213 } | |
| 214 } | |
| 215 } | |
| 216 // monitors | |
| 217 { GrowableArray<MonitorValue*>* l = ((ScopeDesc*) this)->monitors(); | |
| 218 if (l != NULL) { | |
| 219 st->print_cr(" Monitor stack"); | |
| 220 for (int index = 0; index < l->length(); index++) { | |
| 221 st->print(" - @%d: ", index); | |
| 222 l->at(index)->print_on(st); | |
| 223 st->cr(); | |
| 224 } | |
| 225 } | |
| 226 } | |
| 227 | |
| 228 #ifdef COMPILER2 | |
| 229 if (DoEscapeAnalysis && is_top() && _objects != NULL) { | |
| 230 tty->print_cr("Objects"); | |
| 231 for (int i = 0; i < _objects->length(); i++) { | |
| 232 ObjectValue* sv = (ObjectValue*) _objects->at(i); | |
| 233 tty->print(" - %d: ", sv->id()); | |
| 234 sv->print_fields_on(tty); | |
| 235 tty->cr(); | |
| 236 } | |
| 237 } | |
| 238 #endif // COMPILER2 | |
| 239 } | |
| 240 | |
| 241 #endif | |
| 242 | |
| 243 void ScopeDesc::verify() { | |
| 244 ResourceMark rm; | |
| 245 guarantee(method()->is_method(), "type check"); | |
| 246 | |
| 247 // check if we have any illegal elements on the expression stack | |
| 248 { GrowableArray<ScopeValue*>* l = expressions(); | |
| 249 if (l != NULL) { | |
| 250 for (int index = 0; index < l->length(); index++) { | |
| 251 //guarantee(!l->at(index)->is_illegal(), "expression element cannot be illegal"); | |
| 252 } | |
| 253 } | |
| 254 } | |
| 255 } |